DtmfSequencer.groovy

def sequencer =
  { sequence, closure ->
      if (dtmfSequencerEnabled)
      {   
        for (dtmf in sequence)
        {
            switch (dtmf)
            {
                case "*":say("${baseAudioUrl}/dtmf/star.wav");; 
                case "#":say("${baseAudioUrl}/dtmf/pound.wav");
                default:
                  say("${baseAudioUrl}/dtmf/${dtmf.toLowerCase()}.wav");
            }
        }
      }
      if (closure) return closure()
  }